Chemistry, 07.04.2020 22:28 dipperisbro
Pigments allow photosynthetic organisms to capture solar energy, which is the "fuel" that makes photosynthesis possible.
Most photosynthetic organisms contain chlorophyll, the pigment that gives them a green color, which masks other pigments that are seen in certain periods of the year. Pigments called carotenoids to give photosynthesizing cells an orange to yellow to red color. In addition, the carotenoids give red algae their red color and cyanobacteria a bluish color. The main energy-producing organelles of plants are called chloroplasts and have two major parts. The grana of chloroplasts are made up of thylakoids, membranous disks that contain photosynthetic pigments such as chlorophylls a and b which are responsible for absorbing solar energy. The stroma is a fluid-filled space surrounding the thylakoids where carbon dioxide is enzymatically reduced to carbohydrates such as glucose and starch.
True or false?
Answers: 3
Chemistry, 21.06.2019 20:30, nmadrigal
In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask
Answers: 2
Chemistry, 22.06.2019 06:00, citlalli30
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
Chemistry, 22.06.2019 17:30, katherineweightman
What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.
Answers: 1
Pigments allow photosynthetic organisms to capture solar energy, which is the "fuel" that makes phot...
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